304 Seymour Ave, Derby — property record card

Industrial built in 1928, 7,000 ft² in Derby, appraised at $359,100 (assessed $251,370); last sold for $340,000 on October 6, 2021.

Rebuilt from the public Connecticut CAMA and Parcel Layer — not the official card. For the official card, with owner, photo and sketch, ask the Derby assessor’s office.

Parcel

Location	304 Seymour Ave, Derby CT 06418
Parcel ID	8-11 67A
CAMA account	19550-3599
Use	Industrial (state use code 300)
Zone	I-1
Planning region	Naugatuck Valley

Valuation — revaluation 2025

Appraised (market value)	$359,100 land $60,200 · building $298,900
Assessed (70%)	$251,370 land $42,140

Building

Year built	1928 (effective 1996)
Living area	7,000 ft²
Condition	5

Sales

Last sale	$340,000 — October 6, 2021

Brownfield inventory

City Cutter Grinding, 304 Seymour Avenue — program: NONE

Within about 500 m (a third of a mile): 1 site of the state brownfield inventory. Brownfields in Derby.

What this means

Connecticut taxes property at 70% of its appraised market value: the assessment $251,370 times the town mill rate gives the yearly tax.
Derby last revalued in 2025. Towns revalue every five years; between two revaluations the appraisal stays the same even if the market moves.

Point at the centre of the parcel — not a survey.

Data: Connecticut CAMA and Parcel Layer (2026 collection, CC0), retrieved October 31, 2026. Sources and freshness. No owner names are published.

First page of a sample Connecticut Property Report

The report for 304 Seymour Ave

This card shows what the assessor records. The report adds what lies around the parcel: FEMA flood zone, wetlands and watercourses, aquifer protection area, Natural Diversity Database areas, brownfields nearby and sewer service.

$19card · PDF within 24 h · you pay after receiving itSee the sample (PDF)

Order the report